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ASI Controls Building Automation Bard Wall-Mount and HVAC Equipment
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The NesbittAire Unit Ventilator is designed to accommodate the specific thermal requirements of the classroom or any other space of similar size where people congregate. Units are capable of providing heating, ventilation, and mechanical cooling or natural cooling with outdoor air. All functions are automatically controlled. Typical operation allows the fans to operate, re-circulating room air prior to occupancy. When room temperature approaches the desired comfort level, the roll damper opens to admit the minimum percentage of outdoor air for ventilation. Thereafter, outdoor air and room air are blended and discharged at a temperature that will maintain classroom comfort. In mild weather, greater percentages of outdoor air may be circulated for natural cooling. Year-round units with mechanical cooling simply provide comfort when the introduction of outdoor air is not capable of cooling during the hot summer months. The basic engineering design feature of all NesbittAire unit ventilators is the location of the fans below the heat transfer element. This blow-thru design removes the fan blades from the view of students, thus eliminating the temptation to drop paper clips or liquids through the discharge grille, perhaps harming themselves or the equipment. Since the fan assembly is located under the heat transfer element in the blow-thru design, the heat transfer element is never exposed to sub-freezing temperature. This provides one of the surest safety factors known for the prevention of freeze-up and even affords effective protection in the event of a pump or boiler failure. The NesbittAire Unit Ventilator quietly and automatically maintains the classroom thermal environment most conducive to learning. It has been designed to withstand the rigors of classroom punishment and continue to operate effectively. The unit ventilator continues to be the most energy efficient and economical method of maintaining classroom comfort. |
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